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Phrase(s): Little things please little minds. [and] Small things please small minds.
Prov. People who are not intelligent are pleased by trivial things. (Implies that the person you are talking about is not intelligent.) • Jill: Nathaniel’s been awfully cheerful today. Jane: Yes, his favorite TV show is on tonight. Jill: Little things please little minds, they say.
McGrawhill's American Idioms And Phrasal Verbs